New Battery Separator from Porous Power Significantly Reduces Risk of
Thermal Runaway

February 25, 2013 05:00 AM Eastern Daylight Time

BOULDER, Colo.--(BUSINESS WIRE)--U.S.-based Porous Power Technologies, LLC (PPT) announces the launch of
a line of ceramic-filled battery separators designed to significantly
improve the thermal stability and safety of the large-format lithium-ion
batteries used in electric vehicles, flat-cell consumer electronics, and
many high-power applications.

At high temperatures that can cause other separators to fail, PPT’s
ceramic-filled polymer separators fuse together, leaving a thin film of
ceramic particles between the electrodes and reducing the likelihood of
hard shorts that can lead to thermal runaway and catastrophic cell
failure.

Unlike dense ceramic coatings applied as a separate layer on competing
separators, PPT’s products contain ceramic particles that are thoroughly
distributed throughout their chemically inert PVDF polymer. The
particles reside primarily in the pore walls, leaving a large and
uniform open pore structure that enables ions to pass through with less
resistance and less heat generation.

Other benefits of PPT’s ceramic separators include:

More power in high-current applications

Reduced separator shrinkage

Increased thermal stability with less cell degradation

Extended cycle life

Higher bake-out and operating temperatures

Improved puncture and abuse resistance

SYMMETRIX ceramic-filled battery separators are available in a variety
of thicknesses to enable many cell configurations and designs. For more
information or to arrange a trial, contact Bernard Perry at (001)
720-890-4888 or support@porouspower.com.

About Porous Power

Porous Power Technologies, LLC (www.porouspower.com and http://twitter.com/PorousPower)
makes electrode separators that reduce the cost and improve the safety,
performance, efficiency and life of lithium-ion batteries, particularly
large-format cells for electric vehicles, stationary power and consumer
electronics applications.

Contacts

Porous Power Technologies, LLCMr. Bernard Perry,
+001-720-890-4888Chief Business Development Officerbperry@porouspower.com